10 results on '"Tsung-Yeh Wu"'
Search Results
2. Low-Cost and Rapid Fabrication of Metallic Nanostructures for Sensitive Biosensors Using Hot-Embossing and Dielectric-Heating Nanoimprint Methods
- Author
-
Kuang-Li Lee, Tsung-Yeh Wu, Hsuan-Yeh Hsu, Sen-Yeu Yang, and Pei-Kuen Wei
- Subjects
metallic nanostructures ,biosensors ,Fano resonance ,hot-embossing ,radio-frequency heating ,template-stripping ,Chemical technology ,TP1-1185 - Abstract
We propose two approaches—hot-embossing and dielectric-heating nanoimprinting methods—for low-cost and rapid fabrication of periodic nanostructures. Each nanofabrication process for the imprinted plastic nanostructures is completed within several seconds without the use of release agents and epoxy. Low-cost, large-area, and highly sensitive aluminum nanostructures on A4 size plastic films are fabricated by evaporating aluminum film on hot-embossing nanostructures. The narrowest bandwidth of the Fano resonance is only 2.7 nm in the visible light region. The periodic aluminum nanostructure achieves a figure of merit of 150, and an intensity sensitivity of 29,345%/RIU (refractive index unit). The rapid fabrication is also achieved by using radio-frequency (RF) sensitive plastic films and a commercial RF welding machine. The dielectric-heating, using RF power, takes advantage of the rapid heating/cooling process and lower electric power consumption. The fabricated capped aluminum nanoslit array has a 5 nm Fano linewidth and 490.46 nm/RIU wavelength sensitivity. The biosensing capabilities of the metallic nanostructures are further verified by measuring antigen–antibody interactions using bovine serum albumin (BSA) and anti-BSA. These rapid and high-throughput fabrication methods can benefit low-cost, highly sensitive biosensors and other sensing applications.
- Published
- 2017
- Full Text
- View/download PDF
3. Fabrication and applications of ultraflexible nanostructures using dielectric heating-assisted nanoimprint on PVC films
- Author
-
Yi-Ru Li, Shu-Cheng Lo, Sen-Yeu Yang, Pei-Kuen Wei, Tsung-Yeh Wu, Po-Cheng Tsai, and Kuang-Li Lee
- Subjects
Nanostructure ,Materials science ,Fabrication ,Nanowire ,General Physics and Astronomy ,Nanotechnology ,02 engineering and technology ,Dielectric ,Substrate (electronics) ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,0104 chemical sciences ,Dielectric heating ,General Materials Science ,Nanorod ,Surface plasmon resonance ,0210 nano-technology - Abstract
We developed dielectric heating-assisted nanoimprint method for rapid fabrication of ultraflexible nanostructures. Using spin-coating polyvinyl-chloride (PVC) film on the glass slide, the dielectric heating on PVC film helped the pattern transfer from the mold to PVC film in few seconds. Various kinds of nanostructures were successfully made on PVC films with about 20-μm thickness. We demonstrated the applications of ultraflexible metallic nanostructures for bending measurement using surface plasmon resonance (SPR) and surface enhanced Raman scattering (SERS) on the curved surfaces. For measuring bending angles using SPR on capped nanowire arrays, the minimum detection angle was 2.4 × 10−3 degree under 0.02 nm wavelength resolution. For SERS measurement, the nanorod arrays on a curved substrate can increase SERS signals for two times as compared to planar SERS substrate.
- Published
- 2018
4. Low-Cost and Rapid Fabrication of Metallic Nanostructures for Sensitive Biosensors Using Hot-Embossing and Dielectric-Heating Nanoimprint Methods
- Author
-
Pei-Kuen Wei, Tsung-Yeh Wu, Kuang-Li Lee, Sen-Yeu Yang, and Hsuan-Yeh Hsu
- Subjects
Plastic welding ,Fabrication ,Nanostructure ,Materials science ,metallic nanostructures ,hot-embossing ,radio-frequency heating ,Nanotechnology ,02 engineering and technology ,Biosensing Techniques ,010402 general chemistry ,lcsh:Chemical technology ,01 natural sciences ,Biochemistry ,Article ,Analytical Chemistry ,Heating ,Dielectric heating ,Figure of merit ,lcsh:TP1-1185 ,Electrical and Electronic Engineering ,Instrumentation ,template-stripping ,Fano resonance ,Surface Plasmon Resonance ,021001 nanoscience & nanotechnology ,biosensors ,Atomic and Molecular Physics, and Optics ,0104 chemical sciences ,Nanostructures ,Nanolithography ,Gold ,0210 nano-technology ,Biosensor - Abstract
We propose two approaches—hot-embossing and dielectric-heating nanoimprinting methods—for low-cost and rapid fabrication of periodic nanostructures. Each nanofabrication process for the imprinted plastic nanostructures is completed within several seconds without the use of release agents and epoxy. Low-cost, large-area, and highly sensitive aluminum nanostructures on A4 size plastic films are fabricated by evaporating aluminum film on hot-embossing nanostructures. The narrowest bandwidth of the Fano resonance is only 2.7 nm in the visible light region. The periodic aluminum nanostructure achieves a figure of merit of 150, and an intensity sensitivity of 29,345%/RIU (refractive index unit). The rapid fabrication is also achieved by using radio-frequency (RF) sensitive plastic films and a commercial RF welding machine. The dielectric-heating, using RF power, takes advantage of the rapid heating/cooling process and lower electric power consumption. The fabricated capped aluminum nanoslit array has a 5 nm Fano linewidth and 490.46 nm/RIU wavelength sensitivity. The biosensing capabilities of the metallic nanostructures are further verified by measuring antigen–antibody interactions using bovine serum albumin (BSA) and anti-BSA. These rapid and high-throughput fabrication methods can benefit low-cost, highly sensitive biosensors and other sensing applications.
- Published
- 2017
5. Dual Sensing Arrays for Surface Plasmon Resonance (SPR) and Surface-Enhanced Raman Scattering (SERS) Based on Nanowire/Nanorod Hybrid Nanostructures
- Author
-
Sen-Yeu Yang, Chia-Yu Hung, Kuang-Li Lee, Tsung-Yeh Wu, Pei-Kuen Wei, and Ming-Yang Pan
- Subjects
Surface (mathematics) ,Nanostructure ,Materials science ,business.industry ,Mechanical Engineering ,Nanowire ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,0104 chemical sciences ,symbols.namesake ,Mechanics of Materials ,symbols ,Optoelectronics ,Nanorod ,Surface plasmon resonance ,0210 nano-technology ,business ,Biochip ,Raman scattering - Published
- 2018
6. A Novel Dilute Antimony Channel $\hbox{In}_{0.2}\hbox{Ga}_{0.8}\hbox{AsSb}/\hbox{GaAs}$ HEMT
- Author
-
Ching-Sung Lee, Tsung-Yeh Wu, Wei-Chou Hsu, Ke-Hua Su, Yue-Han Wu, R. S. Hsiao, Li Chang, Tung-Wei Chi, and Jenn-Fang Chen
- Subjects
business.industry ,Chemistry ,Transconductance ,Transistor ,Wide-bandgap semiconductor ,Electrical engineering ,High-electron-mobility transistor ,Cutoff frequency ,Electronic, Optical and Magnetic Materials ,law.invention ,law ,Saturation current ,Optoelectronics ,Electrical and Electronic Engineering ,business ,Quantum well ,Molecular beam epitaxy - Abstract
This letter reports, for the first time, a high-electron mobility transistor (HEMT) using a dilute antimony In0.2Ga0.8 AsSb channel, which is grown by a molecular-beam epitaxy system. The interfacial quality within the InGaAsSb/GaAs quantum well of the HEMT device was effectively improved by introducing the surfactantlike Sb atoms during the growth of the InGaAs layer. The improved heterostructural quality and electron transport properties have also been verified by various surface characterization techniques. In comparison, the proposed HEMT with (without) the incorporation of Sb atoms has demonstrated the maximum extrinsic transconductance gm,max of 227 (180) mS/mm, a drain saturation current density IDSS of 218 (170) mA/mm, a gate-voltage swing of 1.215 (1.15) V, a cutoff frequency fT of 25 (20.6) GHz, and the maximum oscillation frequency fmax of 28.3 (25.6) GHz at 300 K with gate dimensions of 1.2times200 mum2
- Published
- 2007
7. Scanning high-TcSQUID imaging system for magnetocardiography
- Author
-
Shieh-Yueh Yang, Herng-Er Horng, Shu Hsien Liao, Jen-Tzong Jeng, Chau-Chung Wu, Hong-Chang Yang, M. J. Chen, Kuen Lin Chen, J. C. Chen, Tsung Yeh Wu, and Chiu Hsien Wu
- Subjects
Squid ,Materials science ,biology ,Metals and Alloys ,Condensed Matter Physics ,First order ,Biomagnetism ,Nuclear magnetic resonance ,biology.animal ,Materials Chemistry ,Ceramics and Composites ,Electrical and Electronic Engineering ,Noise level ,Magnetocardiography ,Active noise control - Abstract
A scanning magnetocardiography (MCG) system constructed from SQUID sensors offers potential to basic or clinical research in biomagnetism. In this work, we study a first order scanning electronic high-Tc (HTS) SQUID MCG system for biomagnetic signals. The scanning MCG system was equipped with an x–y translation bed powered by step motors. Using noise cancellation and μ-metal shielding, we reduced the noise level substantially. The established scanning HTS MCG system was used to study the magnetophysiology of hypercholesterolaemic (HC) rabbits. The MCG data of HC rabbits were analysed. The MCG contour map of HC rabbits provides experimental models for the interpretation of human cardiac patterns.
- Published
- 2006
8. Development of radio-frequency heating-assisted nanoimprint with PETG solution for nanostructure-based biosensors
- Author
-
Kuang-Li Lee, Pei-Kuen Wei, Sen-Yeu Yang, Tsung-Yeh Wu, and Hsuan-Yeh Hsu
- Subjects
Nanostructure ,Materials science ,Surface plasmon ,Nanowire ,General Physics and Astronomy ,Nanotechnology ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,lcsh:QC1-999 ,0104 chemical sciences ,Nanoimprint lithography ,law.invention ,Nanolithography ,Nanosensor ,law ,Dielectric heating ,Nanorod ,0210 nano-technology ,lcsh:Physics - Abstract
We present radio-frequency (RF) heating-assisted nanoimprint lithography (NIL) for the rapid fabrication of nanostructured biochips. The chips were spin-coated using a RF-sensitive polymer film, namely polyethylene terephthalate glycol-modified (PETG). The RF heating process takes advantage of rapid temperature increases and cooling for NIL. Using a patterned nickel film as the mold, various nanostructures, such as nanowire, nanorod, and nanogrid arrays, were successfully fabricated within several seconds. For surface plasmon biosensing chips, the silver-coated nanowire arrays achieved a linewidth of 6.01 nm and wavelength sensitivity of 550 nm per refractive index unit. The functionality of the sensor was verified by observing the label-free antigen–antibody interactions.
- Published
- 2017
9. Investigation of Ge1-xSnx/Ge with high Sn composition grown at low-temperature
- Author
-
Tsung-Yeh Wu, I. S. Yu, A. I. Nikiforov, V. I. Mashanov, Kuen-Hsien Wu, Hung Hsiang Cheng, Xiaoke Wu, and O. P. Pchelyakov
- Subjects
Materials science ,business.industry ,Band gap ,General Physics and Astronomy ,Composition (combinatorics) ,lcsh:QC1-999 ,Transmission electron microscopy ,Melting point ,Optoelectronics ,Direct and indirect band gaps ,Electronic band structure ,business ,Layer (electronics) ,lcsh:Physics ,Molecular beam epitaxy - Abstract
We report on experimental investigations of the growth of Ge1-xSnx film with thickness above the critical thickness using Molecular Beam Epitaxy. A series of Ge1-xSnx films with various Sn compositions up to 14% are deposited on a Ge buffer layer for growth at low temperatures close to the melting point of Sn. Analysis of various measurements shows that the Ge1-xSnx film is defect free in the XTEM image and that Sn is distributed almost uniformly in the film for Sn compositions up to 9.3%. The Sn composition of the films is higher than the Sn composition that is theoretically predicted to cause the energy band of Ge to change from an indirect to a direct bandgap; thus, the present investigation provides a method for growing direct bandgap GeSn film, which is desired for use in applications involving optoelectronic devices.
- Published
- 2011
10. A Novel Dilute Antimony Channel In0.2Ga0.8AsSb/GaAs HEMT.
- Author
-
Ke-Hua Su, Wei-Chou Hsu, Ching-Sung Lee, Tsung-Yeh Wu, Yue-Han Wu, Li Chang, Ru-Shang Hsiao, Jenn-Fang Chen, and Tung-Wei Chi
- Subjects
DILUTED magnetic semiconductors ,MODULATION-doped field-effect transistors ,MOLECULAR beam epitaxy ,EPITAXY ,SEMICONDUCTORS - Abstract
This letter reports, for the first time, a high-electron mobility transistor (HEMT) using a dilute antimony In
0.2 Ga0.8 AsSb channel, which is grown by a molecular-beam epitaxy system. The interfacial quality within the InGaAsSb/GaAs quantum well of the HEMT device was effectively improved by introducing the surfactantlike Sb atoms during the growth of the InGaAs layer. The improved heterostructural quality and electron transport properties have also been verified by various surface characterization techniques. In comparison, the proposed HEMT with (without) the incorporation of Sb atoms has demonstrated the maximum extrinsic transconductance gm,max of 227 (180) mS/mm, a drain saturation current density IDSS of 218 (170) mA/mm, a gate-voltage swing of 1.215 (1.15) V, a cutoff frequency fT of 25 (20.6) GHz, and the maximum oscillation frequency fmax of 28.3 (25.6) GHz at 300 K with gate dimensions of 1.2 × 200 µm². [ABSTRACT FROM AUTHOR]- Published
- 2007
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.